This program — Deferred Action for Childhood Arrivals, or DACA — was aimed at people who came to the US when they were younger than 16 years old, who either had pursued or were pursuing education and had no felony convictions, among other conditions. It let them get temporary protection from deportation and permits to work in the US.

But the order would end the DACA program. Now, it says that work permits already issued under the program will remain valid. However, these permits are all already set to expire at some point in the next two years, and once they expire, they will not be renewed, according to the order. Starting very soon, a trickle of immigrants would start to lose their DACA protections — and by January 2019, barring a policy reversal or an act of Congress, all of them would.

Even while still protected by DACA, the order says, the government will not grant them “advance parole.” That means that should they leave the country, they would not be allowed to return.

Santa Ana is a sanctuary city. Anaheim has a mayor task force to study making Anaheim a “welcoming city.” Fullerton, Orange and Garden Grove should probably get something started.